Williams, who resigned from the force on Sunday, was reported to have turned himself in.

“It is important that the community knows there is one standard of justice, no matter your sex, race religion, or occupation,” Mosby said in a statement. “Police officers are sworn to protect and serve and when that oath is taken for granted and an abuse of that power is evident, we will hold them accountable to the fullest extent of the law.”

Williams had been working in the 2500 block of Monument Street with his partner on Saturday when the violent confrontation occurred.

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Incidents captured on police body cameras

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Incidents captured on police body cameras

University of Cincinnati police officer Ray Tensing (R) stands near a car after driver Samuel Dubose was allegedly pulled over and shot during a traffic stop in Cincinnati, Ohio July 19, 2015, in a still image from body camera video released by the Hamilton County Prosecutor's Office on July 29, 2015. Tensing has been charged with the murder of Dubose after a grand jury investigation, the Hamilton County prosecutor said on Wednesday. REUTERS/Hamilton County Prosecutor's Office/Handout via Reuters FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

University of Cincinnati police officer Ray Tensing stands near a car after driver Samuel Dubose was allegedly pulled over and shot during a traffic stop in Cincinnati, Ohio July 19, 2015, in a still image from body camera video released by the Hamilton County Prosecutor's Office on July 29, 2015. REUTERS/Hamilton County Prosecutor's Office/Handout via Reuters/File Photo FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

Nurse Alex Wubbels is shown during an incident at University of Utah Hospital in Salt Lake City, Utah, U.S., in this still photo taken from police body-worn camera video taken July 26, 2017 and provided September 1, 2017. Salt Lake City Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY

Nurse Alex Wubbels is shown during an incident at University of Utah Hospital in Salt Lake City, Utah, U.S., in this still photo taken from police body-worn camera video taken July 26, 2017 and provided September 1, 2017. Salt Lake City Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY

Nurse Alex Wubbels is shown during an incident at University of Utah Hospital in Salt Lake City, Utah, U.S., in this still photo taken from police body-worn camera video taken July 26, 2017 and provided September 1, 2017. Salt Lake City Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY

A still image captured from police body camera video appears to show a Baltimore police officer placing a small plastic bag in a trash-strewn yard as two colleagues look on (not shown) according to the Maryland Office of the Public Defender in this image released in Baltimore, Maryland, U.S. on July 19, 2017. Courtesy Baltimore Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY.

A still image captured from police body camera video appears to show a Baltimore police officer retrieving a small plastic bag in a trash-strewn yard which was placed earlier by the officer according to the Maryland Office of the Public Defender in this image released in Baltimore, Maryland, U.S. on July 19, 2017. Courtesy Baltimore Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY.

A still image captured from police body camera video appears to show a Baltimore police officer placing a small plastic bag in a trash-strewn yard as two colleagues look on (not shown) according to the Maryland Office of the Public Defender in this image released in Baltimore, Maryland, U.S. on July 19, 2017. Courtesy Baltimore Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY.

A still image captured from police body camera video appears to show a Baltimore police officer holding a small plastic bag filled with capsules which were filled with heroin powder in the arrest report, according to the Maryland Office of the Public Defender in this image released in Baltimore, Maryland, U.S. on July 19, 2017. Courtesy Baltimore Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY.

A Chicago police officer is seen shooting his weapon at a moving car (C) in this still image from video taken from a body camera released by the Chicago police in Chicago, Illinois, U.S. July 28, 2016. Chicago Police Department/Handout via Reuters THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS TPX IMAGES OF THE DAY

Police place handcuffs on Paul O'Neal, 18, after he was shot in this still image from video taken from a body camera released by the Chicago police in Chicago, Illinois, U.S. July 28, 2016. Chicago Police Department/Handout via Reuters THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS

A Chicago police officer is seen shooting his weapon at a moving car (C) in this still image from video taken from a body camera released by the Chicago police in Chicago, Illinois, U.S. July 28, 2016. Chicago Police Department/Handout via Reuters THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH Dylan Noble, 19, is shown in this image captured from police body camera video, after being shot while approaching Fresno, California police officers against their order during a traffic stop shortly before he was shot and killed in Fresno, California, U.S. on June 25, 2016. Courtesy Fresno Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH Dylan Noble, 19, is shown in this image captured from police body camera video, being shot while approaching Fresno, California police officers against their order during a traffic stop shortly before he was shot and killed in Fresno, California, U.S. on June 25, 2016. Courtesy Fresno Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY TPX IMAGES OF THE DAY

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH Dylan Noble, 19, is shown in this image captured from police body camera video, being shot while approaching Fresno, California police officers against their order during a traffic stop shortly before he was shot and killed in Fresno, California, U.S. on June 25, 2016. Courtesy Fresno Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY

Dylan Noble, 19, is shown in this image captured from police body camera video, approaching Fresno, California police officers against their order during a traffic stop shortly before he was shot and killed in Fresno, California, U.S. on June 25, 2016. Courtesy Fresno Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY

University of Cincinnati police officer Ray Tensing (L) approaches a car with his gun drawn after driver Samuel Dubose was allegedly pulled over and shot during a traffic stop in Cincinnati, Ohio July 19, 2015, in a still image from body camera video released by the Hamilton County Prosecutor's Office on July 29, 2015. Tensing has been charged with the murder of Dubose after a grand jury investigation, the Hamilton County prosecutor said on Wednesday. REUTERS/Hamilton County Prosecutor's Office/Handout via Reuters FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

University of Cincinnati police officer Ray Tensing (R) stands near a car after driver Samuel Dubose was allegedly pulled over and shot during a traffic stop in Cincinnati, Ohio July 19, 2015, in a still image from body camera video released by the Hamilton County Prosecutor's Office on July 29, 2015. Tensing has been charged with the murder of Dubose after a grand jury investigation, the Hamilton County prosecutor said on Wednesday. REUTERS/Hamilton County Prosecutor's Office/Handout via Reuters FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

University of Cincinnati police officers Ray Tensing (L) and Phillip Kidd approach a car after driver Samuel Dubose was allegedly pulled over and shot during a traffic stop in Cincinnati, Ohio July 19, 2015, in a still image from body camera video released by the Hamilton County Prosecutor's Office on July 29, 2015. Tensing has been charged with the murder of Dubose after a grand jury investigation, the Hamilton County prosecutor said on Wednesday. REUTERS/Hamilton County Prosecutor's Office/Handout via Reuters FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

University of Cincinnati police officer Ray Tensing's body camera shows his handgun drawn after driver Samuel Dubose was pulled over and shot during a traffic stop in Cincinnati, Ohio July 19, 2015, in a still image from video released by the Hamilton County Prosecutor's Office on July 29, 2015. A University of Cincinnati police officer who fatally shot an unarmed black man has been charged with murder after a grand jury investigation, the Hamilton County prosecutor said on Wednesday. REUTERS/Hamilton County Prosecutor's Office/Handout via Reuters FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

University of Cincinnati police officer Ray Tensing's body camera shows driver Samuel Dubose pulled over during a traffic stop in Cincinnati, Ohio July 19, 2015, in a still image from video released by the Hamilton County Prosecutor's Office on July 29, 2015. A University of Cincinnati police officer who fatally shot an unarmed black man has been charged with murder after a grand jury investigation, the Hamilton County prosecutor said on Wednesday. REUTERS/Hamilton County Prosecutor's Office/Handout via Reuters FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

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Police said 26-year-old Dashawn McGrier refused to provide identification to the two officers, causing the encounter to “escalate.” Williams was caught on camera punching McGrier, then throwing him to the ground. McGrier did not appear to resist. He suffered a fractured jaw and ribs, among other injuries, his lawyer said.

Williams and McGrier had clashed before. In June, McGrier was accused of assaulting the officer. McGrier is contesting the charges.

Interim police Commissioner Gary Tuggle said Williams should not have been influenced by the June incident in his latest encounter with McGrier.

“If it were borne out of emotion, we are trained — we should be trained — to never act in an emotional way, particularly when it comes to engaging with citizens,” Tuggle told The Baltimore Sun.

Earlier, Tuggle described the video as “disturbing” and “disappointing.”

Sandra Almond Cooper, president of the Baltimore chapter of the NAACP, told the Sun the charges against Williams were appropriate. She said his partner, who was not charged with a crime and has been placed on administrative duties, should also be held responsible for failing to stop the attack.